Check the oil level in the rear bevel box at the orange oil fill cap on the side. You will need a squirt bottle and fill very slowly to do it correctly. I used Red Line Extreme.
Actually, that orange 'fillcap' on the side of the bevel box is the breather and the reason it takes so long to fill through this port is that there is a tubular baffle inside to prevent oil sloshing out. The correct fill port is the hex socket bolt on the rear of the BB, just above the drain plug. All this learnt the hard way by the way!
